. Circular. Insect pests; Insect pests. AMiile many modes of procedure have been advocated, tending to Avard off impending attacks, and perhaps even a greater number of devices constructed and mixtures compounded for the destruction of grasshoppers, we will here consider only such as are readily and cheaply obtainable by the farmer and ranchman and those most practical in ajDjilication. DESTROYING THE EGGS. Destroying the eggs of the grasshoppers seems to be the only preventive measure that promises to be worth while attempting, except, perhaps, the destruction of the young as they are hatchin
. Circular. Insect pests; Insect pests. AMiile many modes of procedure have been advocated, tending to Avard off impending attacks, and perhaps even a greater number of devices constructed and mixtures compounded for the destruction of grasshoppers, we will here consider only such as are readily and cheaply obtainable by the farmer and ranchman and those most practical in ajDjilication. DESTROYING THE EGGS. Destroying the eggs of the grasshoppers seems to be the only preventive measure that promises to be worth while attempting, except, perhaps, the destruction of the young as they are Fig. 7.—Grasshoppers killed by fungus, Sporotrichum ylohuliferuin. (After Bruner.) Destruction of the eggs may be accomplished by either plowing, har- rowing, disking, or cultivating, in the fall or winter, all roadsides, ditch banks, margins of cultivated fields, uncultivated fields, and grassy margins along fences. In short, all waste lands that it is pos- sible to reach in this manner should receive attention, unless it is known that no eggs were deposited there. The soil need not be stirred deeply, 2 inches being a sufficient depth to accomplish the desired effect; and circumstances will proba- bly dictate the kind of tool or tools that a farmer ought to use and where to use them. There is no doubt whatever that if this measure were put into operation at the proper time, in whatever manner is most practicable, disastrous outbreaks the following spring would be forestalled and prevented. Except in cases of isolated farms or [Cir. 84]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology. Washington, D. C. : The Bureau
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